Infrared transparent gallate glass

A gallate and infrared-transmitting technology applied in the field of optical glass to achieve high transmittance and wide transmission range

Inactive Publication Date: 2008-04-23
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited to the anti-devitrification performance of the composition, only small pieces of glass samples can be prepared

Method used

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  • Infrared transparent gallate glass

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment adopts mole percentage to form 30Ga 2 o 3 +35CaO+20BaO+15BaF 2, Prepare 1000g of powder, melt in an electric furnace at 1350°C for 2 hours, pass dry air into the melt, then lower the temperature and keep it at 1250°C for 1 hour, stir for 1 hour to make the glass uniform. The melt is poured on a preheated template, annealed at 630° C. for 2 hours to eliminate the stress in the glass, and then slowly cooled to room temperature to obtain a gallate infrared-transmitting glass. Table 1 lists the properties of the glass in this embodiment. It shows that the glass of this example has good physical properties. Fig. 1 is the transmission spectrum of the glass of this embodiment, which has a very wide transmission range and high transmittance (uncoated), and the hydroxyl absorption near 3.3 μm is small, which is a kind of glass with good application prospects. infrared material. The material has good physical and chemical properties, as shown in Table 2:

[0...

Embodiment 2

[0038] Example 2, Example 3, Example 4, Example 5

[0039] Table 3 Example 2, Example 3, Example 4, Example 5 Weigh each ingredient to prepare 100 grams of powder, melt it in an electric furnace at 1350-1450 ° C for 3 hours, and pass it into the melt Dry the air, then keep it at 1250-1350°C and stir for 3 hours to make the glass uniform. The melt is poured on a preheated template, cooled rapidly to about 640°C, at T g Annealed at around temperature for 2 hours, then cooled slowly to room temperature.

[0040] The test of glass of the present invention shows that:

[0041] The glass can be used as a transparent multi-band window material with high transmittance to visible light and mid-infrared light at the same time.

[0042] The glass has a very small absorption coefficient in the vicinity of 3.0 μm due to hydroxyl groups.

[0043] The glass is a visible-infrared optical material that is stable, easy to manufacture in large sizes and complex shapes, has high optical unifo...

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Abstract

This inventive infrared ray transmitting glass (gallate glass) is composed of (by mol percentages): Ga2O3:5-40, MO/MCO3:30-70,MF2/MCl2:0.1-25,Me2O3:0-24. During the smelting, introduced are: dry air, CC14, GeC14, C12, SOC12, one or more of these kinds, to effectively lower the harmful content of hydroxyl. The glass has its cut-off wavelength longer than 6um, and has advantages of: low glass phonon energy, better glass formation property, excellent mechanical property, high optical quality, low hydroxyl content, suitable for making plane sensor window, scout plane window, automobile window, head cover of missile, optical fiber of infrared ray laser, substrate glass of optical fiber amplifier.

Description

technical field [0001] The present invention relates to optical glass, especially a kind of infrared gallate glass. The over-spectral effect is small. Background technique [0002] Optical materials with high transparency in the 0.5-5μm band have very important applications in civilian and military fields, including: infrared countermeasures (IRCM), chemical remote sensing, laser radar, infrared target simulation, secure space communication and satellite communication, infrared guidance, aviation - space reconnaissance instruments and so on. These new-generation optoelectronic systems often work under very harsh conditions, so higher requirements are put forward for their window materials, not only hope that they have as low as possible light absorption and high laser damage threshold in the infrared laser emission band And optical uniformity, etc. At the same time, there are often higher requirements for material size (>φ200mm), molding, mechanical and thermal properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/23
Inventor 袁新强范有余张龙胡和方
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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